Changes in abscisic acid levels during dormancy release in freesia corms |
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| Authors: | Shuji Uyemura Hideo Imanishi |
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| Institution: | (1) Laboratory of Floriculture, College of Agriculture, University of Osaka Prefecture, 591 Sakai, Osaka, Japan |
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| Abstract: | A high level of free-abscisic acid (ABA) was detected when corms were still in deep dormancy. The level of free-ABA decreased as the corm dormancy disappeared and increased temporarily after complete release from dormancy. A gradual slight increase of bound-ABA was observed during dormancy release.Treatment of dormant corms with benzyladenine (BA) increased sprouting but the sprouts did not show normal growth. Ethylene treatment induced complete sprouting and subsequent normal growth. Changes in ABA levels and ethylene production are discussed in relation to dormancy release in freesia corms. |
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| Keywords: | Freesia corms abscisic acid dormancy benzyladenine ethylene |
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